1MAC050144-MB C
Section 9
Recording functions
615 series ANSI
599
Technical Manual
Section 9
Recording functions
9.1
Disturbance recorder, DFR
9.1.1
Functionality
The IED is provided with a digital fault recorder featuring up to 12 analog and 64 binary
signal channels. The analog channels can be set to record either the waveform or the trend
of the currents and voltage measured.
The analog channels can be set to trigger the recording function when the measured value
falls below or exceeds the set values. The binary signal channels can be set to start a
recording on the rising or the falling edge of the binary signal or both.
By default, the binary channels are set to record external or internal IED signals, for
example the pickup or trip signals of the IED stages, or external blocking or control
signals. Binary IED signals such as a protection pickup or trip signal, or an external IED
control signal over a binary input can be set to trigger the recording. The recorded
information is stored in a non-volatile memory and can be uploaded for subsequent fault
analysis.
9.1.1.1
Recorded analog inputs
The user can map any analog signal type of the IED to each analog channel of the digital
fault recorder by setting the
Channel selection
parameter of the corresponding analog
channel. In addition, the user can enable or disable each analog channel of the digital fault
recorder by setting the
Operation
parameter of the corresponding analog channel to Enable
or Disable.
All analog channels of the digital fault recorder that are enabled and have a valid signal
type mapped are included in the recording.
9.1.1.2
Triggering alternatives
The recording can be triggered by any or several of the following alternatives:
• Triggering according to the state change of any or several of the binary channels of
the digital fault recorder. The user can set the level sensitivity with the
Level trigger
mode
parameter of the corresponding binary channel.
• Triggering on limit violations of the analog channels of the digital fault recorder (high
and low limit)
• Manual triggering via the
Trig recording
parameter (LHMI or communication)
• Periodic triggering.
Regardless of the triggering type, each recording generates events through state changes
of the
Recording started
,
Recording made
and
Recording stored
status parameters. The
Recording stored
parameter indicates that the recording has been stored to the non-volatile
Summary of Contents for 615 Series ANSI
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